Device for the prevention of pocket-picking



F. BINI.

DEVICE FOR THE PREVENTION OF POCKET PICKING.

APPLICATION HLED JULY H, 1919.

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FRANCESCO BINI, OF MILAN, ITALY.

ITEVICE FOR THE PREVENTION OF POCKET-PICKING.

Application filed July 11, 1919.

T 0 all whom it may concern Be it known that I, FRANCESCO BINI, a subject of the King of Italy, residing at Milan, Kingdom of Italy, have invented certain new and useful Improvements in' Devices for the Prevention of Pocket-Picking, of which the following is a specification.

The present invention relates to a device which gives warning of an .ttempt to steal an object from the pocket by the report of a detonator fixed to the object to be protected, which detonator is discharged by a pull on a small chain attached to the clothes.

The device forming the subject of the present invention has for its main objects practicability and ease of application, and to make the detonation certain.

The accompanying drawing illustrates by way of example one form of the invention. This form comprises (a) A cylindrical casing in several pieces containing adetonating device, the said casing to be fixed to the object to be protected;

(1)) A detonating device inclosed in the said casing to be actuated by a small chain attached by its loose end to the clothes;

(0) A small chain having its two ends attached, one to the detonator and the other to the clothes, and certain accessories for the purpose of keeping the chain in its proper position.

The casing is composed of two tubular metal cylinders 1-2, joined by a screw collar 3 through which passes the shank of the percussion striker. The upper tube is closed by a screwed plug 4, of which the interior face forms the anvil of the detonator; it is pierced by a number of holes 5 and it carries a retaining spring clip 6 by means of which one can fix the casing to the object to be protected, for example a'pocket wallet. The lower tube 2 is closed by a screwed plug 7 which carries the retaining arrangement for the detonator and through which passes the shank of the releasing arrangement.

In the upper tube may be placed a diaphragm 8 to close the detonating chamber 9.

The detonating device consists of a percussion striker and arrangements for retaining and releasing the striker.

The percussion striker comprises a shank 10 held, by the pressure of the spring 11 on the nut 12, against the plug 4, on which is placed the detonating substance. The shank Specification of Letters Patent.

Serial No. 310.119.

10 passes through a hole in the center of the screw collar 3 and carries at its extremity a button 13 arranged to engage with the retaining apparatus.

The said retaining apparatus comprises several spring hooks, 14 the release of which is controlled by a truncated cone shaped button 15 held in its highest position by a spiral spring 16 and joined to a shank 17 carrying link 18 to which is attached one end of the chain 19.

The chain passes through a ring 20 which can be attached to the object to be protected by means of the screw button 21, and then through the clothes, if necessary, by way of eyelets formed of two pieces of metal 22-23 screwed together and having a washer 24 next the material of the garment 25, and then attached by its other end to a ring 27 furnished with a screw threaded pin on which screws the nut 29., by means of which the said ring is attached to the clothes.

To put the device in the position to operate, unscrew the plug 4 and place a charge of detonating mixture in the detonation chamber 9 and screw in plug 41. Unscrew the tube 1 from the collar 3 and press back the detonator with the finger until the button on the end of the shank engages with the hooks of the retaining apparatus 14, then replace the tube 1. The device is now fixed by means of the clip 6 to the object to be protected, the chain 19 passed through the hole 20 and attached to the ring 18 of the apparatus. Should a thief attempt to steal the object, he pulls the chain which causes the release arrangement to act causing the detonation, while the object remains attached to the chain by reason of the clip and the ring 20.

What I claim as my invention is 1. In a protection device of the class described, an alarm carrying device comprising a tubular member adapted to carry a charge of detonating material; a detonator extending into said tubular member; a plug in one end of said tubular member for sup- Patented July 20,1920.

spring, when scribed, the combination of a cylindricalv casing comprising a plurality of separable parts. and having it clip Whereby'it is zittached to the article to be protected; a percussion striker carried by a shank and pro vided with a spring a retaining device for I 10 the percussion striker comprising a pluralthe casing;

ity' of spring'hooks for engaging the shank of the detonating device to hold the same a trip device 7 With the spring tensioned; adapted to release the hooks from the shank, all of saiddevices being contained Within and means attached at one of its ends to the trip device for operating the same. Y r r In testimony whereof I aflix my signature.

FRANCESCO BINI. 

